"What you remember about your life is almost certainly not accurate. Adults have very few memories before age five, and there is a systematic bias to the memories most people have for the rest of their lives. We are more likely to remember details about positive events like marriage and having children than we are to remember negative events like hospital stays or the death of a loved one. Many studies have found that people appear to remember much more from their teens and 20s than the rest of their lives. A fifty-year-old might remember more about her 20s than her 30s, even though the events in her 30s were more recent. Is there something about the teens and 20s that make them more memorable? Or do our brains just lose the ability to form lasting memories as we age?"